67Leads › Stats › Insulation contractors › Maryland
How many insulation contractors are in Maryland? (in our data)
As of 5 Nov 2026, 67Leads counts 59 insulation contractors in Maryland, from Google Maps listings across the 40 cities we cover there. 83% list a website, 49% have a findable email, and the median Google rating is 4.8.
Updated 5 Nov 2026. Rows behind these figures last changed 30 Sep 2026.
59Businesses
83%Have a website
49%Have a findable email
10%Of emails, SMTP-verified
14%Owner name known
4.8Median Google rating
These are counts of insulation contractors in Maryland in the 67Leads warehouse, from Google Maps listings across the cities we have covered so far, with listings that are another kind of business removed. They are not a census, and cities we have not covered are missing. For an official count of establishments by industry, see the US Census Bureau County Business Patterns (checked 4 Nov 2026).
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The numbers
| Scope | Businesses | Website | No website | Email | Verified of emails | Site down of checked | Toll-free phone | Owner name | Median rating | Median reviews |
|---|
| Maryland | 59 | 83% | 17% | 49% | 10% | 5% | 2% | 14% | 4.8 | 12 |
Top Maryland cities
- Baltimore: 12 insulation contractors, 4 with an email, 2 with no website
- Dundalk: 2 insulation contractors, 1 with an email, 1 with no website
- Easton: 2 insulation contractors, 2 with an email, 0 with no website
- Elkridge: 2 insulation contractors, 2 with an email, 0 with no website
- Glen Burnie: 2 insulation contractors, 1 with an email, 0 with no website
- Halethorpe: 2 insulation contractors, 0 with an email, 1 with no website
- Laurel: 2 insulation contractors, 1 with an email, 0 with no website
- Linthicum Heights: 2 insulation contractors, 0 with an email, 0 with no website
- Pasadena: 2 insulation contractors, 1 with an email, 1 with no website
- Annapolis: 1 insulation contractor, 1 with an email, 0 with no website
Methodology and sample sizes
- Businesses: listings with a phone number, graded as on-trade, with opted-out
businesses removed (59 rows).
- Website / no website: whether the map listing names a website
(49 do, 10 do not).
- Email: an address read from the company's own website (29).
Verified means the mail server confirmed the mailbox over SMTP; nothing is sent
(3 of the 29).
- Site down of checked: of the 43 listed websites our crawler tried
to load, the share where no page loaded (2). Sites not yet tried, or whose
robots.txt asked us not to, are not counted either way.
- Toll-free phone: the listing's main number is an 8xx toll-free number
(1).
- Owner name: an owner named on the company's site (8).
- Median rating and reviews: over the 59 listings with a Google rating.
- Percentages are rounded to the nearest whole percent; "under 1%" means at least one but
less than half a percent.
Cite this page
Free to quote and reuse with a link (CC BY 4.0). Suggested citation:
67Leads. "How many insulation contractors are in Maryland? (67Leads data)." https://67leads.com/stats/insulation/md. Updated 5 Nov 2026. Counts of Google Maps listings in the 67Leads warehouse, not a census.Related
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Questions
How many insulation contractors are in Maryland?59 in our data as of 5 Nov 2026, from Google Maps listings in the 40 Maryland cities we cover. Not a census of every insulation contractor in the state.
What percent of insulation contractors in Maryland have a website?83%; 10 (17%) list none.
What percent of insulation contractors in Maryland have an email address?49% (29); 3 of those were confirmed by the mail server.
Which city in Maryland has the most insulation contractors?In our data, Baltimore, with 12.
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